| abstract |
PROBLEM TO BE SOLVED: To provide nanometer-order hollow polymer particles and colored hollow polymer particles having a high porosity, and pseudo-emulsion radical polymerization that does not require the use of a dispersion stabilizer such as a surfactant. To provide a simple and low environmental load hollow polymer particle production method that uses a process. SOLUTION: Copolymer obtained by polymerizing a monomer group (I) containing a radical polymerizable water-soluble monomer (A) and a radical polymerizable water-insoluble monomer (B). A hollow polymer particle comprising a shell wall comprising a coalescence as a main component, and having an average thickness of the shell wall of 5 to 80 nm, and a radically polymerizable water-soluble monomer (A), A hollow polymer particle characterized by radically polymerizing a monomer group (I) containing a radically polymerizable water-insoluble monomer (B) in an aqueous medium using a water-soluble polymerization initiator Production method. [Selection] Figure 10 |